akar.earthMRV: Definition
What is MRV (measurement, reporting and verification)? How carbon projects prove emission reductions and removals, with an Indonesia focus.
MRV is measurement, reporting and verification: the process a carbon project or a country uses to quantify greenhouse gas emissions and removals, write them up in a standard format and have an independent party check them. No carbon credit can be issued without it.
Why it matters
MRV turns field activity into tradable tonnes. Weak MRV is the root of most integrity failures in forest carbon, from inflated baselines to missing reversals. Buyers, ratings agencies and the ICVCM all look closely at how a project measures carbon, how it handles uncertainty and whether the verifier had enough evidence.
How it works
- Measurement: field plots, tree measurements, satellite imagery, activity data and models produce carbon stock and emission estimates, following a methodology such as VM0047.
- Reporting: results go into a monitoring report using the standard’s template, with all calculations and data sources.
- Verification: an accredited body reviews the report, visits the site and samples the evidence before the registry issues credits.
At national level, the same cycle feeds Indonesia’s greenhouse gas inventory and its NDC reporting.
Indonesia and Southeast Asia angle
Indonesia runs a national MRV system linked to its climate registry, and Perpres 110/2025 ties domestic carbon units to measured and verified results. Projects that sell internationally and domestically often have to meet two MRV formats. Designing data collection once, so outputs feed both the international standard and SRUK, saves a lot of rework.
A useful test of any MRV system is whether an outsider can rebuild a reported number from raw data. If a verifier can pick a random plot, find its measurements, see the equation used and trace the result into the total, the system is sound. If not, expect findings, delays and possible deductions.
Common mistakes
- Treating MRV as a reporting chore at the end rather than a design choice at the start.
- Relying on satellites alone without ground calibration.
- Poor data management, so verifiers cannot trace a number back to its source.
Digital tools now automate much of this; see dMRV, our dMRV hub and dMRV implementation.
Frequently asked questions
What does MRV stand for?
Measurement, reporting and verification. Some frameworks say monitoring instead of measurement; the meaning is the same.
Who does the verification in MRV?
For voluntary carbon credits, an accredited validation and verification body (VVB) checks the report. For national inventories, the UNFCCC runs its own review process.
Is MRV only about carbon?
No. Many standards also require monitoring of safeguards, community benefits and biodiversity, which use the same measure, report and check cycle.